<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        #head{
            color: red;
        }
        #nav {
            background-color: #1b6d85;
            color: #fff;
        }
        #main {
            color: blue;
        }
        #main2 {
            color: blue;
        }
        #main3 {
            color: blue;
        }
        #main4 {
            color: blue;
        }
    </style>
</head>
<body>
<div id="head">网站的头部</div>
<div id="nav">网站的导航</div>
<div id="main">主体内容</div>
<div id="main2">主体内容</div>
<div id="main3">主体内容</div>
<div id="main4">主体内容</div>
<div id="main5">主体内容</div>
<div id="foot">尾部</div>
</body>
</html>